linux-kernel - [PATCH char-misc-next] misc: mic: return proper error code

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Message-Id: <1450874731-12894-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Wed, 23 Dec 2015 18:15:31 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sudeep Dutt <sudeep.dutt@...el.com>
Cc:	linux-kernel@...r.kernel.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: [PATCH char-misc-next] misc: mic: return proper error code

On error we are supposed to return negative error code but here we
missed giving the nagative sign. It was never a problem because the
pointer returned from scif_add_mmu_notifier() was never tested. But even
though we should be returning negative error.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
 drivers/misc/mic/scif/scif_dma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/mic/scif/scif_dma.c b/drivers/misc/mic/scif/scif_dma.c
index 95a13c6..f998daa 100644
--- a/drivers/misc/mic/scif/scif_dma.c
+++ b/drivers/misc/mic/scif/scif_dma.c
@@ -293,13 +293,13 @@ scif_add_mmu_notifier(struct mm_struct *mm, struct scif_endpt *ep)
 		 = kzalloc(sizeof(*mmn), GFP_KERNEL);
 
 	if (!mmn)
-		return ERR_PTR(ENOMEM);
+		return ERR_PTR(-ENOMEM);
 
 	scif_init_mmu_notifier(mmn, current->mm, ep);
 	if (mmu_notifier_register(&mmn->ep_mmu_notifier,
 				  current->mm)) {
 		kfree(mmn);
-		return ERR_PTR(EBUSY);
+		return ERR_PTR(-EBUSY);
 	}
 	list_add(&mmn->list, &ep->rma_info.mmn_list);
 	return mmn;
-- 
1.9.1

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